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GeoGebra
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Author:
杨欣霞
GeoGebra
New Resources
撒针估算面积实验
第八周作业1
斐波那契螺旋弧线（表格法-可动态调节）
龙形曲线-分形龙2
平行線的判定
Discover Resources
複合圖形(八)
angle
扇形面積公式
Copy of 正方体展开图
内外弦图1
Discover Topics
Logarithmic Functions
Right Triangles
Angles
Plane Figures or Shapes
Arithmetic Operations